In the jungle, the pups are giving their annual checkups to the monkeys, including Mandy, her family, and her guards. However, they are unaware that another large monkey, named Big Hairy, is watching them covertly. Upon noticing Rocky and how well he is good at scratching the itches on the backs of monkeys, Big Hairy wants Rocky to scratch his back as he has a really bad itch.
When the pups prepare to return to Adventure Bay, taking Tracker with them, Big Hairy is able to stow aboard the PAW Patroller as it departs the jungle.
Once in Adventure Bay, Big Hairy quickly causes problems as he tries to find anything that would be able to help relieve him of his itchy back. When Mayor Goodway spots him using the City Hall flagpole as his means to scratch his back, she calls the PAW Patrol.
At the Lookout, the PAW Patroller has just arrived back from the jungle, when Ryder gets Mayor Goodway's call for help and summons the pups to the Lookout. After Marshall slips on some of the banana peels that Big Hairy left behind that he ate on the way to Adventure Bay, the team head up to get their orders. Ryder assigns Rocky and Tracker to assist him in dealing with Big Hairy, and as they deploy, Tracker lands in Rocky's recycling truck before hopping out to get in his Jeep, and they head out.
Once they find Big Hairy, they try to lure him back to the PAW Patroller with bananas so Robo-Dog can take him back to the jungle, but Big Hairy doesn't seem interested. It is not until he notices Rocky and remembers his claw he used to scratch Mandy and the other monkeys' backs does he reveal what he really needed. Rocky attempts to help with scratching Big Hairy's back, but it is soon clear that his back is so itchy, Big Hairy doesn't want to part with Rocky since he's so good at it. This leads to where Big Hairy takes Rocky with him to the Lookout, where as Skye keeps watch with her helicopter, Zuma uses the periscope to scratch Big Hairy's back, allowing Skye to take Rocky to safety.
Once Big Hairy is loaded up on the PAW Patroller with plenty of bananas to keep him satisfied on the way back to the jungle, however, when he starts using the PAW Patroller to scratch his back again, Rocky is able to put together a hand scratcher for Big Hairy to use instead of him, and as a way for Big Hairy to remember Rocky by. Having his hunger and itch satisfied, Big Hairy hops aboard the PAW Patroller, and Ryder has Robo-Dog take Big Hairy home. Ryder shouts after him that if Big Hairy ever needs help again, just "ooga-ooga" for help, leaving the pups laughing as the PAW Patroller departs to take Big Hairy back to the jungle.